electricity supply corporation of … supply corporation of malawi (escom) is a statutory...
TRANSCRIPT
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ELECTRICITY SUPPLY CORPORATION OF MALAWI (ESCOM)
PRESENTATION
EXECUTIVE EXCHANGE ON DEVELOPING AN ANCILLARYSERVICE MARKET FOR SAPP
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BACKGROUND INFORMATION
Malawi-119 thousand square kilometers
Malawi population-15 million-2011
Lilongwe is the capital city (Central region)
Blantyre commercial (Southern)
Mzuzu commercial (Northern) with fast growing industries.
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MAP OF MALAWI
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ECONOMIC FREEDOM
Malawi's economic freedom score is 55.3making its economy the 118th freest in the 2013world Index;Malawi is ranked 20th out of 46 countries in the Sub-Saharan Africa regionoverall score is only a few points below the worldaverage.Malawi scores slightly above average in investmentfreedom and financial freedom
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Electricity Supply Corporation of Malawi (ESCOM)
is a statutory corporation that generates, transmit, and distribute electrical energy in Malawi.
The corporation is divided into business units according to its operations; Generation Business Unit (GBU), Transmission Business Unit (TBU), and Distribution Business Unit (DBU).
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GENERATION BUSINESS UNIT (GBU)
is a unit that operationally deals with generation of electricity.
The Business Unit comprise of:
Nkula A Power Station :8X3=24MW
Nkula B Power Station :20X5=100MW
Tedzani 1&2 Power Station :10X4=40MW
Tedzani-3 Power Station :26.35X2=52.7MW
Kapichira Power Station :32.4X2=64.8MW
TOTAL : 281.5MW
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ESCOM GRIDMalawi’ s Total power Demand is around 360MW and projected 400MW by end of 2013; (Against a total available capacity of 281.5MW).
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SOUTHERN REGION
Southern region:Heavy industrials i.e. Blantyre city, the commercial city and Zomba city-commercial loads; Illovo Sugar company, Tea and cotton companies-industrial and agricultural loads.
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CENTRAL REGION
Central region:Heavy industrials i.e. Lilongwe the capital city-commercial; Dwangwa (Illovo) Sugar Company and Flue cued tobacco-industrial; Lilongwe, Kasungu, and Mchinji-agricultural loads.
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NORTHEN REGION
Northern region:Mzuzu city-commercial, Coalmines, Uranium mines,Chikangawa Timber Ri-ply-industrial loads.
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PROBLEMS and RISKS
The system is incurring higher transmission losses (due to I2R-high resistance effect) caused by long transmission distancesat low voltages i.e. 66kV and 33kV.; and consequently;
Low voltage drops are experienced at the load centers. Thismeans that currents are high in the distribution network henceI2R losses high in the distribution network
Imbalance that exists between generation and transmissionsometimes deprive supply of electricity when generationcapacity is available i.e. low voltages.
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PROBLEMS and RISKS /Continued
Stopping one machine for annual maintenance purposes is aproblem; it means more load shedding and the maintenanceprocedures are just brief
The load shedding processes have also retarded industrial andeconomic growth in the country, as most investors ran awayfrom a business environment that is marred with power cutshort transactions.
There is a risk that if Malawi does not receive enough rains orexperience again a two year drought that was experienced inthe year 1914, Shire River would stop flowing and there wouldbe power crisis. This is so because all the three (100%)generation stations lie along the Shire River.
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SOLUTIONS1. (MCC-Sponsored) Interconnection to SAPP through
Mozambique Agreement to be signed by end February;a. Proposed line from Matambo-MZ to Phombeya-MW
(79km)b. ESCOM TRADE FAIR
2. (MCC-Sponsored) CFL Project.
3. Issuing Licenses to Independent Power Producers (IPP);
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SOLUTIONS/ Video
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SOLUTIONS /Continued4. Power Factor Correction
a. Installed Capacitor Banksb. Installed Capacitor Banksc. 30Mvars at Chintheche; 33kVd. 10Mvars at Lilongwe A; 11kVe. 10Mvars at Lilongwe B; 11kV
5. Vertical unbundling of the utilitya. Generationb. Transmissionc. Distribution
6. Efficient Appliance and Sell Reactive Power as well
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SOLUTIONS /Continued7. Privatization: Partially freeing it from Political influence
and resource squandering.
8. Planning for New Generation stationsa. Fufu falls in the northern region with potential
capacity of 175MW.
b. Kholombidzo falls in the southern region withpotential capacity of 140MW
c. Mpatamanga falls in the southern region withpotential capacity of 120MW
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JANUARY, 2013 ENERGY TRANSACTIONS
ENTITY USING ENERGY MWh
1 NES 9,205.24
2 CES 44,777.95
3 SES 80,191.02
4 GRID USE & LOSSES 13,235.39
5 TRANSMISSION PURCHASED 147,409.59
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ESCOM TRANSMISSION AND LOADS DISTRIBUTION MAP
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30.4%
6.2%
54.4%
CES
INTER-BUSNESS UNIT ENERGY TRADE
6.2%30.4%
54.4% 9.0%
NES CES SES Grid use + losses
NES
SESCES
LOSSES + GRID
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Worst Overloaded SubstationsAll substations inthe tableindicateoverload in themonth ofJanuary 2013.
Note Lilongwe AT2 is beingoverloadedevery month;this month itreduced from119.28% to110.44%.
Substation Capacity (MVA) Apparent Power (MVA) Real Power (MW) % Loading
Liwonde 5.0 5.62 5.23 112.46%
Chinyama 7.5 7.86 7.57 104.82%
Lilongwe_A‐T2 12.5 13.81 12.04 110.44%
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GEN-Sales Vs. Grid Use+Losses
The graphsindicate thatGeneration salesincreased slightlyas compared toDecember 2012;but decreased by2.40% ascompared toJanuary 2012; andGrid uses+lossesalmost remainedsame.Nkula B Unit 8 wasnot available in themonth.
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ENER
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TREND‐ GEN vs LOSS
GEN Sales (MWh '000)
Grid use + losses (MWh '000)
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GEN-Sales Vs. SES, CES NES
In month ofJanuary 2013,SES almostremained thesame as lastmonth; while CESincreased slightly .
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ENER
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TREND‐GEN, SES,CES &NES
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GEN Sales (MWh '000)
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